Field validation of phosphine efficacy on the first recorded resistant strains of Sitophilus granarius and Tribolium castaneum from the Czech Republic
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F19%3A00005089" target="_blank" >RIV/00027006:_____/19:00005089 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/abs/pii/S0022474X18303709" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0022474X18303709</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jspr.2019.02.003" target="_blank" >10.1016/j.jspr.2019.02.003</a>
Alternative languages
Result language
angličtina
Original language name
Field validation of phosphine efficacy on the first recorded resistant strains of Sitophilus granarius and Tribolium castaneum from the Czech Republic
Original language description
This study first estimated the current state of phosphine sensitivity (using a knock-down/KT100/Degesch kit) in Sitophilus granarius (23 strains) and Tribolium castaneum (8 strains) in Czech Republic grain stores. The resistance of S. granarius (21.7% resistant strains: coefficient of resistance KT100 ranged from 0.5 to 2.3 among strains) was substantially lower and less frequent than that of T. castaneum (87.5% resistant strains; coefficient of resistance KT100 ranged from 0.9 to 52.5 among strains). The phosphine efficacy of the laboratory and field (i.e., resistant) pest strains was validated during commercial fumigation when suboptimal tarpaulin sealing resulted in low-concentration phosphine exposure (Ct products ranged from 5.9 to 7.4 g*hr/m(3)). Although even low-dose fumigation led to 100% adult mortality of both laboratory and field strains of S. granarius and laboratory strains of T. castaneum, the mortality of the field strain of T. castaneum ranged from 47% to 95%. Larval emergence from the fumigated commodity samples with pest eggs was zero or near zero for laboratory strains, while 1.3-6.0 (S. granarius) and 63.7-80.00 (T. castaneum) field-strain larvae emerged per sample (100 g). This study shows that although a high proportion of the tested pest populations were still sensitive, several T castaneum populations showed an elevated level of resistance that may decrease field fumigation efficacy, especially under suboptimal phosphine dosage conditions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10616 - Entomology
Result continuities
Project
<a href="/en/project/QJ1530373" target="_blank" >QJ1530373: Integrated pest management of cereal crops against pathogens, weeds and insects for sustainable production of food, feed and raw materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Stored Products Research
ISSN
0022-474X
e-ISSN
1879-1212
Volume of the periodical
81
Issue of the periodical within the volume
MAR 2019
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
107-113
UT code for WoS article
000463305500014
EID of the result in the Scopus database
2-s2.0-85062224336